Titan Fitness Aerobic Step 27" Stepper w/Risers Cardio Adjust 4" - 6" Exercise Sturdy: Shock-absorbing surface, risers stay in place, heavy duty construction; 300 lb weight capacity Quality Design: Easily maintained and cleaned, risers come off; work out in shoes or bare feet Versatile: Can be used for weight loss, muscle-building and toning, two different settings for more strenuous exercise Safe: Textured surface prevents slipping, Rubber feet on step and riser bottoms protect floor Easily adjustable: Simply insert the risers into the bottom to make it higher, take them out to reduce height